 boost issue?, 3sgte st205 |
 Dec 30, 2007 - 11:16 PM
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 Enthusiast  Joined Aug 7, '05 From Columbus OH Currently Offline Reputation: 3 (100%)  |
My boost gauge isn't going past 0 in 1st or 2nd gear then increases very quickly in 3rd and 4th. I also notice that once the gauge starts reading boost in third I can then go back into second and it reads it when I'm driving more aggresively. It seems like I'm making boost in those lower gears because my bov is hissing at me
 Any thoughts? I currently have the gauge hooked up to the vac line that goes to my bov. I tried moving it to the line that is suggested in the 3sgte maintance sticky but it doesn't seem to be reading correctly either. When it is hooked into this line it only goes -7 and still doesn't push past 0 in 1st and 2nd. Any help would be greatly appreciated. Thanks!
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Replies
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Jan 6, 2008 - 3:09 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
I think you have a problem with your wastegate then. You should inspect it to see if its not stuck. Who clocked the turbo? That clocking bracket could have not been made right, or your wg flap could be getting stuck on the edge of the downpipe. It kind of sounds like its stuck open half way. This would cause you not to be able to build boost in lower gears, but over boost in higher ones, like whats happening right now. Inspect the wastegate.
-------------------- 15PSI - 30MPG - Megasquirt Tuned
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Posts in this topic
CELL_PROTOTYPE_X boost issue? Dec 30, 2007 - 11:16 PM
Alan QUOTE(CELL_PROTOTYPE_X @ Dec 30, 2007 - ... Jan 4, 2008 - 10:02 AM CELL_PROTOTYPE_X I haven't noticed any leaks. The gauge seems t... Jan 4, 2008 - 12:53 PM lagos How much boost does the car make in 4th gear?
It... Jan 4, 2008 - 1:11 PM CELL_PROTOTYPE_X In 3rd and 4th it shoots up to around 18psi when I... Jan 4, 2008 - 1:33 PM Alan And it is boosting 18 psi? you have to be careful ... Jan 5, 2008 - 9:57 AM Kadett It cutts off on 18PSI because the Fuel Cut Defence... Jan 5, 2008 - 11:17 AM CELL_PROTOTYPE_X I'll see about taking a video once the weather... Jan 5, 2008 - 2:41 PM
Alan QUOTE(CELL_PROTOTYPE_X @ Jan 5, 2008 - 2... Jan 5, 2008 - 2:43 PM zCelicaDude the standard turbo will crap its self at 18 psi af... Jan 5, 2008 - 5:46 PM CELL_PROTOTYPE_X Yeah it's clocked downward and I am running a ... Jan 5, 2008 - 6:29 PM CELL_PROTOTYPE_X Thanks for the input lagos. I'm not exactly su... Jan 6, 2008 - 5:31 PM RUNNIN-LOW ok something is realy wierd here the stock boost f... Jan 7, 2008 - 8:14 PM lagos QUOTEthe stock boost for a st205 is only 8psi
sto... Jan 7, 2008 - 8:29 PM CELL_PROTOTYPE_X Is safe mode around 8psi? This isn't my everyd... Jan 7, 2008 - 11:58 PM phattyduck Minimum (ie wastegate) boost is 8-10psi on the ST2... Jan 8, 2008 - 4:43 PM CELL_PROTOTYPE_X Here's some pics...not sure if these help.
... Jan 9, 2008 - 9:26 PM phattyduck QUOTE(CELL_PROTOTYPE_X @ Jan 9, 2008 - 6... Jan 9, 2008 - 9:52 PM Alan The Diaphragm is surly damaged !!! It... Jan 10, 2008 - 1:50 AM CELL_PROTOTYPE_X Thanks guys. So I can just get a new diaphram? I... Jan 10, 2008 - 8:53 AM Alan QUOTE(CELL_PROTOTYPE_X @ Jan 10, 2008 - ... Jan 10, 2008 - 9:00 AM phattyduck QUOTE(CELL_PROTOTYPE_X @ Jan 10, 2008 - ... Jan 10, 2008 - 2:20 PM CELL_PROTOTYPE_X Sorry if this is a stupid question, but how do you... Jan 30, 2008 - 10:13 PM phattyduck QUOTE(CELL_PROTOTYPE_X @ Jan 30, 2008 - ... Jan 31, 2008 - 1:42 AM CELL_PROTOTYPE_X So I know my wastegate actuator is F'ed, but I... Feb 2, 2008 - 11:55 PM lagos 1. your turbo is not messed up.
2. stop checking ... Feb 3, 2008 - 12:08 AM |
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